Connecting structure for refrigerant pipe and inverter including connecting structure
a technology of connecting structure and refrigerant pipe, which is applied in the direction of hose connection, branching pipe, transportation and packaging, etc., can solve the problem of liquid refrigerant leakage inside the housing
Active Publication Date: 2015-06-04
DENSO CORP
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AI Technical Summary
Benefits of technology
The connecting structure of this patent prevents the outer refrigerant pipe from being pushed into the housing and prevents damage to the cooler inside the housing, even in the event of a collision or impact. This is achieved by ensuring that the flanges or ribs of the outer refrigerant pipe do not push the inner refrigerant pipe tips, as there is a gap between them.
Problems solved by technology
In a case of an in-vehicle device in which an outer refrigerant pipe and an inner refrigerant pipe are connected at a housing wall, when the outer refrigerant pipe is pushed deep inside the housing due to an impact of a collision, the outer refrigerant pipe pushes the inner refrigerant pipe and the cooler to which the inner refrigerant pipe is connected is damaged eventually, which may cause liquid refrigerant to leak out inside the housing.
Method used
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Embodiment Construction
[0021]An inverter of the present embodiment includes a laminated cooling unit (a first cooler). The laminated cooling unit is configured such that a plurality of power cards housing a semiconductor element therein are laminated alternately with a plurality of cooling plates, and adjacent cooling plates across a power card is connected to each other via a connecting pipe. A refrigerant pipe extending from the cooling plates along a laminating direction of the laminated cooling unit is fitted to a joint pipe from inside a housing. In such an inverter, two different coolers (the first cooler and a second cooler) are provided in the inverter, and the coolers may be connected to each other via a refrigerant pipe (an example of an outer refrigerant pipe) passing outside the housing of the inverter. That is, such a configuration may be employed that the housing of the inverter has two through holes, arid both ends of the outer refrigerant pipe are connected to respective through holes.
[002...
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A connecting structure includes a housing, a cooler, an inner refrigerant pipe, an outer refrigerant pipe, and a joint pipe. The joint pipe is attached to a through hole of the housing. The inner refrigerant pipe is fitted to the joint pipe from a housing inner side. The outer refrigerant pipe is fitted to the joint pipe from a housing outer side. A tip of the inner refrigerant pipe and a tip of the outer refrigerant pipe define a gap inside the joint pipe. An end surface of a flange or a rib of the outer refrigerant pipe in a refrigerant-pipe axis direction abuts with an end surface of a flange or a rib of the joint pipe in the refrigerant-pipe axis direction.
Description
INCORPORATION BY REFERENCE[0001]The disclosure of Japanese Patent Application No. 2013-250826 filed on Dec. 4, 2013 including the specification, drawings and abstract is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a connecting structure for connecting an inner refrigerant pipe extending from a cooler inside a housing for an in-vehicle device, to an outer refrigerant pipe placed outside the housing at a housing wall. Typically, the present invention relates to a connecting structure in an inverter including a cooler in a housing, and the connecting structure connects an outer refrigerant pipe to an inner refrigerant pipe extending from the cooler.[0004]2. Description of Related Art[0005]In an electronic device including a liquid cooling cooler, it is necessary to connect an outer refrigerant pipe to a refrigerant pipe of the cooler. A connecting part therebetween is often placed on a...
Claims
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IPC IPC(8): F16L23/16F16L21/02
CPCF16L21/02F16L23/16F16L41/086B60H1/00271B60H1/00571H05K7/20927F16L5/12F25B41/40
Inventor ISHIKAWA, KEITARO
Owner DENSO CORP